CHEMISTRY COURSEWORK RATE OF REACTION HYDROCHLORIC ACID AND MAGNESIUM

Repeat step 5 and 6 for 2M, 1. Make sure you put on your personal protective clothing and safety goggles. Reactants with high surface area provide a greater binding surface for other reacting molecules, and therefore increase the number of successful collisions at any moment. Syringes should not be allowed to become wet, or the plungers will stick inside the barrels. Single-holed rubber bung and delivery tube to fit conical flask Note 1. The experiment itself takes only a few minutes.

Experimental set-up of HCl-Magnesium reaction. In Search of Solutions: Make sure you put on your personal protective clothing and safety goggles. The tube through the bung should be a short section of glass, and then a flexible rubber tube can be connected. The experimentation procedures followed were standard for all the two sets of experiments conducted, including data collection mode. Variables Operationalization of variables The dependent variables The duration of reaction, time taken for Magnesium to dissolve in hydrochloric acid completely measured using a stopwatch in seconds. Catalysis of a reaction between sodium thiosulfate and iron III nitrate solutions.

chemistry coursework rate of reaction hydrochloric acid and magnesium

It is best if the students work in pairs because setting up and starting the experiment requires more than one pair of hands. From the experimentation the aims of the experimentation have been achieved. The rate of reaction of magnesium with hydrochloric acid Class practical Magnesium reacts with dilute hydrochloric acid in a conical flask which is connected to an inverted measuring cylinder in a trough of water.

The constants controlled variables The quantity of Magnesium metal used will be held constant by way of using equal lengths of Magnesium ribbons and equivalent weights in grams of powdered Magnesium metal.

Clean if necessary by rubbing lengths of the ribbon with fine sandpaper to remove the layer of oxidation. We also predict that reaction of powdered Magnesium metal with highest concentration of hydrochloric acid will take the shortest duration of reaction.

  TCD THESIS DECLARATION

Rate of Reaction of Magnesium and Hydrochloric Acid

However, the experimentation had the following inconsistencies as shown the table below. Clean the Magnesium ribbon using a sand paper to remove oxides coating its surface. The duration of reactions magnrsium recorded as shown in tables acdi and 3 below. Students follow the rate of reaction between magnesium and the acid, by measuring the amount of gas produced at 10 second intervals. But allow at least 30 minutes to give students time to set up, take readings and draw graph.

chemistry coursework rate of reaction hydrochloric acid and magnesium

Reactants with high surface area provide a greater binding surface for other reacting molecules, and therefore increase the number of successful collisions at any moment. Increasing concentration of hydrochloric acid: This will be changed by using Magnesium ribbons and powdered Magnesium courseworkk in separate experiments.

Rate of reaction between magnesium ribbon and hydrochloric acid.

Please enable JavaScript to access the full features of the site or access our non-JavaScript page. Gate for higher tier: Students should not have access to any source of ignition. Though low hazard, eye protection is necessary as you may get a spray as tiny bubbles burst.

Continue timing until no more gas appears to be given off. However the acid is in excess, so it is mainly the loss of magnesium surface qnd becomes smaller that causes the change in the rate.

chemistry coursework rate of reaction hydrochloric acid and magnesium

The volume of hydrogen gas produced is measured over a few minutes, and the coursweork are used to plot a graph. Therefore, we sought to test the duration of reaction of equal lengths Magnesium coursewprk with reducing concentrations of hydrochloric acid.

Add 40 ml of distilled water and label the conical flask with the concentration of the HCL poured. This will be changed by changing dilution factor. Determination of end of reaction was sometimes uncertain. Repeat steps 5, 6 and 7 above. Therefore, considering concentration factor and surface are factor of reactants it is evident that the rate reaction curve trends would not be linear as expected, but rather exponential.

  LANCIA THESIS WARTO

The tube through the bung should ckursework a short section of glass, and then a flexible rubber tube can be connected.

Rate of Reaction of Magnesium and Hydrochloric Acid

Each experiment run will need 50 cm 3. But these are very expensive and are probably best used by the teacher in a demonstration. If magnesium ribbon is replaced with an equivalent weight of powered magnesium, does the rate of reaction between magnesium and hydrochloric acid double? Catalysis of a reaction between sodium thiosulfate and iron III nitrate solutions.

Equipment and Materials Chemicals and Reagents The following chemicals and reagents were required in the experimentation: I’ve worked as a volunteer in many different international social projects and as a camp counselor every summer. The duration of reaction, time taken for Magnesium to dissolve in hydrochloric acid completely measured using a stopwatch in seconds.

This shows that the reaction is fastest at the start. Aims and objectives of the experiment The aim of this experiment is to verify the effects of surface area of solid reactants and concentration of aqueous reactants on the rates of acid-base chemical reactions.